Construction method of high-altitude special-shaped large-span curtain wall outer decoration frame

Abstract

The invention relates to a construction method of a high-altitude special-shaped large-span curtain wall outer decoration frame, which effectively reduces the operation difficulty in high-altitude construction and improves the safety and reliability in the construction process by combining a layering and sectioning construction mode with a buckling and welding method, and completes the splicing and sectioning treatment of part of components on the ground in advance. The cross beams and the stand columns are effectively connected through the oblique steel beams to form a star-shaped corner combining and space grid structure, the torsion resistance and the overall rigidity of the curtain wall frame are greatly improved, the whole process from design to construction is optimized, the curtain wall outer decoration frame structure is suitable for high-altitude, special-shaped and large-span curtain walls, and the construction efficiency is improved. The construction efficiency can be effectively improved, the structural stability and safety are guaranteed, the construction requirements of complex special-shaped and large-span structures are met, and the combination of attractiveness and functionality is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a construction method for an exterior decorative frame of a high-altitude special-shaped large-span curtain wall. Background Art

[0002] Modern architectural design pays more and more attention to individuality and artistry. Architects can flexibly choose the structure to coordinate it with other parts of the building based on many factors such as the overall style, functional use and environmental adaptability of the building. At the same time, they can perfectly integrate the architectural form and space to create architectural works that are both beautiful and practical. This greatly satisfies the architects' unique creativity and imagination for architectural form and space, and forms a unique visual effect.

[0003] However, this diversity also brings construction challenges: traditional construction methods are often based on standardized processes and steps, which are difficult to adapt to complex and changeable special-shaped structures; further, traditional exterior decoration frame construction methods usually include hoisting the steel structure first and then welding the connection, that is, traditional construction requires a large amount of welding work at high altitudes, which is not only time-consuming and labor-intensive, but also increases construction risks. In addition, when faced with special-shaped structures, it is often difficult to ensure the accuracy and firmness of the connection.

[0004] The construction method of the exterior decorative frame of high-altitude special-shaped large-span curtain walls not only needs to meet the requirements of construction efficiency and safety, but also needs to consider the structural performance of the curtain wall and the durability of the building. The above traditional construction methods are often difficult to achieve efficient construction under the premise of ensuring structural safety. Therefore, it is particularly important to propose a construction method that can enhance the structural performance of the curtain wall and improve the durability of the building, thereby effectively promoting the development and innovation of modern building curtain wall technology, providing architects with more creative space, and ensuring construction quality and safety. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a high-altitude special-shaped large-span curtain wall exterior decoration frame construction method, which effectively solves the existing problems of great construction difficulty, low efficiency, high safety risk, difficult to ensure construction quality and poor adaptability.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a method for constructing a high-altitude special-shaped large-span curtain wall exterior decoration frame, comprising the following steps: Step 1: Divide the construction areas around the building to be constructed into two parts: the atrium area and the outer facade construction area outside the atrium. The outer facade construction area is symmetrically arranged on the left and right sides of the atrium area facade; Step 2: The main steel structure foundation is welded and formed; the steel square tubes and angle steels are welded to the main steel structure respectively to form a panel layer based on the main steel structure, so that the main steel structure and the panel layer together constitute the main steel structure foundation; Step 3: Construction of the keel support foundation; first construct the atrium area, then construct the outer facade steel structure; the atrium area is composed of columns and steel beams, first install the vertical columns on the ground, then install the horizontal steel beams on the vertical columns, and construct layer by layer from bottom to top; the outer facade steel structure area includes a support layer and a dense area; when constructing the support layer, first install the vertical steel columns on the ground, then install the horizontal steel beams on the vertical steel columns, and finally install the oblique steel beams between the horizontal steel beams and the vertical steel columns; the dense area is arranged above the support layer, and during construction, install the columns on the support layer, then install the horizontal steel beams on the columns, and finally connect the oblique steel beams between the horizontal steel beams and the columns, and arrange the oblique steel beams in the same direction in each inter-layer unit; Step 4: Acceptance and spraying of paint; After the keel support foundation construction is completed, the steel structure keel is fully welded and firmly inspected, and the fire-retardant and anti-corrosion paint is sprayed on the steel structure; Step 5: Install the outer decorative buckle cover: Measure and lay out to determine the installation position of the aluminum alloy outer decorative buckle cover, and then install the outer decorative buckle cover on the outer side of the keel support foundation layer by layer, first vertically and then horizontally, from bottom to top; Step 6: Connection construction of the main curtain wall structure: At the intersection of each crossbeam and column and oblique steel beam in the outer facade construction area, the fastening structure set on the inner wall of the column is used to fix it with the main curtain wall structure; Step 7: Apply sealant to detect leakage; check the gaps between each exterior decorative buckle cover from bottom to top, and apply sealant to the gaps; finally, repeat the above steps in a counterclockwise construction manner to construct the exterior decorative frame system on the four sides of the building.

[0007] Furthermore, in step 2, the main steel structure includes H-shaped steel, a main rectangular tube and an auxiliary rectangular tube, the inner diameter of the main rectangular tube is larger than the inner diameter of the auxiliary rectangular tube, and the main steel structure foundation includes an H-shaped steel structure foundation, a main rectangular tube structure foundation and an auxiliary rectangular tube structure foundation.

[0008] Furthermore, the H-shaped steel structure foundation welding construction includes: uniformly welding the steel square tubes to the inner sides of adjacent angle steels along the extension direction of the angle steels, and correspondingly welding the steel square tubes to the inner sides of each steel square tube so that the bottom surfaces of the steel square tubes and the bottom surfaces of the angle steels are on the same plane to form a panel foundation, and then the panel foundation is correspondingly welded to the H-shaped steel to form an H-shaped steel structure foundation; the main rectangular tube structure foundation welds the steel square tubes to the four sides of the main rectangular tube respectively, with two groups welded on each side.

[0009] Furthermore, the steel frame facade structure of the atrium area includes columns and steel beams, and an H-shaped steel structure foundation is used as the columns and steel beams. The beams and columns are welded and fixed, and the width gradually increases from bottom to top, and the overall shape is a trapezoid.

[0010] Furthermore, the support layer construction process includes installing the first-level vertical steel columns at the bottom, fixing the embedded parts at the bottom of the vertical steel columns to the ground in order from the inside to the outside, correcting the verticality and top elevation of the vertical steel columns, and after confirmation, pulling the columns with guy ropes to keep them stable; then using lifting equipment to install the first-layer horizontal steel beams between adjacent vertical steel columns, so that the two ends of the main rectangular tube structure foundation beams are respectively fixedly connected to the corbels on the steel columns, and finally the oblique steel beams are obliquely installed between the adjacent main rectangular tube structure foundations, and the bottom of the steel beams is fixed to the lower side of the vertical steel columns, and the top is obliquely extended upward to be fixedly connected to the corbels on the vertical steel columns; after the first layer is fully constructed, it forms the supporting foundation of the outer facade steel structure.

[0011] Furthermore, the collection area is arranged above the supporting layer. During the construction process, each layer of the structure is arranged from right to left in sequence as H-shaped steel structure foundation columns, inclined steel beams, auxiliary rectangular tube structure foundation columns, inclined steel beams, and H-shaped steel structure foundation columns. After all the steel components of each interlayer unit are installed, a spatial stiffness unit is formed.

[0012] Furthermore, the structure of the outer decorative buckle cover includes a first decorative buckle cover, a second decorative buckle cover, a third decorative buckle cover and a fourth decorative buckle cover, the middle portion and both ends of the first decorative buckle cover are respectively recessed inward to form grooves, and the grooves at both ends are provided with clamping heads, and both ends of the second decorative buckle cover protrude outward to form docking buckles, which can match and extend into the groove of the first decorative buckle cover and be clamped and fixed with the clamping heads in the groove, and when the first decorative buckle cover and the second decorative buckle cover are adapted to be buckled and clamped together, the surrounding surfaces of the keel support base are flush.

[0013] Furthermore, the clamping structure between the third decorative buckle cover and the fourth decorative buckle cover is the same as the clamping structure between the first decorative buckle cover and the second decorative buckle cover. When installing the outer decorative buckle cover on the auxiliary rectangular tube structure foundation, it is only necessary to first fix the left and right ends of the third decorative buckle cover to the auxiliary rectangular tube through self-tapping and self-drilling nails with rubber pads, and then fit the fourth decorative buckle cover and the third decorative buckle cover together.

[0014] Furthermore, a fastening structure connected to the main curtain wall structure is arranged on the inner wall of the column, which is used to connect the outer decoration frame structure with the main curtain wall structure. The fastening structure includes a connecting steel plate, a connecting piece, stainless steel machine nails and bolts. The inner end of the connecting steel plate is welded and fixed to the inner wall of the H-shaped steel. The connecting piece is arranged between two adjacent connecting steel plates, and its inner end extends to the inner side of the main curtain wall glass. Both sides of the end are symmetrically folded outward to form a flange structure. The flange structure is fixedly connected to the gasket frame on the curtain wall body by stainless steel machine nails. The outer end of the connecting piece extends outward between the two connecting steel plates and is fixedly connected to the connecting steel plates on both sides thereof by bolts.

[0015] The beneficial effects of the above technical scheme are as follows: the high-altitude special-shaped large-span curtain wall exterior decoration frame construction method provided by the present invention effectively reduces the difficulty of operations in high-altitude construction, improves the safety and reliability of the construction process, and completes the assembly and segmentation of some components on the ground in advance, reducing the high-altitude operation time, and realizes rapid installation by using lifting equipment, thereby improving the efficiency of high-altitude construction. Through the reasonable arrangement of the fastening structure and the corbel nodes, the overall installation of the high-altitude curtain wall is more stable, and the wind resistance and earthquake resistance are further enhanced.

[0016] The present invention effectively solves the complexity problem brought by the construction of special-shaped frames by carefully dividing the construction area (large-span atrium area and M-shaped outer facade area) and adopting segmentation and zoning methods for the special-shaped parts. The modular segmentation design and the M-shaped angle arrangement method are adopted to achieve precise docking even in the special-shaped structure area, and the segmentation node processing is more flexible. The snap-on installation method of the external decorative aluminum alloy buckle cover ensures that the appearance of the special-shaped structure is flat and the seams are tight, thereby improving the overall visual effect of the curtain wall.

[0017] The present invention also reasonably distributes the loads of various components through the combined design of steel structures of different specifications such as H-shaped steel, main rectangular tubes, and auxiliary rectangular tubes, thereby enhancing the load-bearing capacity and deformation resistance of the large-span structure. The alternating arrangement of H-shaped steel and auxiliary rectangular tubes is combined with the configuration of oblique steel beams to effectively optimize the lateral force resistance of the large-span structure. The layered installation and layer-by-layer reinforcement form is adopted to avoid the overall deformation problem that may occur in the large-span structure during the construction process.

[0018] The modular assembly design of the present invention ensures the precise docking of the steel structure and the panel, avoids rework caused by dimensional errors in traditional construction, and improves the construction quality. The separate design of the steel structure and the exterior decorative panel makes subsequent maintenance and replacement more convenient without the need for large-scale dismantling of the overall steel structure.

[0019] The present invention effectively connects the cross beams and columns through oblique steel beams to form a M-shaped corner group and spatial grid structure, which greatly improves the torsional resistance and overall rigidity of the curtain wall frame. The design of the M-shaped structure makes the force on each node more uniform, avoids a single node from bearing excessive load, extends the service life of the frame, reduces the construction difficulty of the intersection, and further improves the lateral displacement resistance of the overall frame system under horizontal seismic force, ensuring the structural stability and safety of the building during an earthquake.

[0020] Moreover, the distance between the exterior decorative frame system of the present invention and the glass panel is small, so that there is almost no obvious gap between the exterior decorative frame and the glass panel, and the appearance is unified and coordinated, which can meet the requirements of high-end buildings for the aesthetics of the facade. In addition, the compact distance design effectively reduces air infiltration, helps to improve the air tightness and thermal insulation performance of the curtain wall system, reduce the energy consumption of the building, and conform to the design concept of green buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a flow chart of an implementation method of the present invention; Figure 2 This is a schematic diagram of the construction facade structure of the present invention; Figure 3 Implement structural drawings for H-beam steel structure foundation; Figure 4 Implement the structural diagram for the H-beam external decorative buckle cover; Figure 5 for Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 6 The structural diagram of the main rectangular tube outer decorative buckle cover; FIG7 is a structural diagram of the implementation of the decorative buckle cover on the outer side of the auxiliary rectangular tube; Figure 8 is a schematic diagram of the main curtain wall connection structure; FIG9 is an enlarged schematic diagram of the structure at point B in FIG8.

[0022] Figure markings: 1- H-shaped steel, 2-angle steel, 3-steel square tube, 4-first decorative buckle cover, 41-groove, 42-clamp, 5-second decorative buckle cover, 51-jointing buckle, 6-self-drilling nails, 7-rubber pads, 8-third decorative buckle cover, 9-fourth decorative buckle cover, 10-secondary rectangular tube, 11-main rectangular tube, 12-connecting steel plate, 13-connecting parts, 14-stainless steel machine nails, 15-main curtain wall glass, 16-sealant, 17-pad frame, 18-bolts. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Embodiment 1, this embodiment aims to provide a method for constructing a high-altitude special-shaped large-span curtain wall exterior decoration frame, which is mainly used in high-rise buildings, large commercial complexes, gymnasiums and other construction fields that require special-shaped large-span curtain wall decoration, and is particularly suitable for those construction projects that have high requirements for appearance effects and need to ensure construction safety and structural stability. According to the architect's design intention, curtain wall shapes of different shapes are made to achieve unique appearance effects and effectively enhance the overall aesthetics and brand image of the building. However, this design diversity and innovation also bring challenges to construction practice. The traditional construction method based on standardized processes and steps is incapable of effectively coping with special-shaped curtain walls of various shapes and complex structures. Therefore, it is necessary to propose a method for constructing a curtain wall exterior decoration frame that can be easily adjusted and modified according to the building appearance and design requirements, meet the construction requirements of various special-shaped curtain walls, and at the same time, through a reliable connection with the glass curtain wall, ensure that the outer decoration frame steel structure can ensure the overall structural strength and safety of the inner glass curtain wall main structure when subjected to external forces such as wind pressure and earthquakes.

[0024] This embodiment provides a method for constructing an exterior decorative frame of a high-altitude special-shaped large-span curtain wall. The exterior decorative frame system is assembled on the four sides of the outer side of the main curtain wall structure of the building in a counterclockwise flow construction manner. The actual construction specifically includes the following steps: Step 1: Divide the flow section; First, according to the actual width of the main curtain wall construction surface of the building, the construction surface on one side of the building is divided into zones to form the atrium construction area and the outer facade construction area outside the atrium area. As shown in Figure 2, the outer facade construction area is symmetrically arranged on the left and right sides of the atrium area facade.

[0025] Based on the outer facade steel structure, as shown in Figure 2, the construction area is divided into the lowest support layer and the dense area above the support layer according to the height of the main curtain wall construction surface of the building. Furthermore, in the dense area, the dense area is evenly divided into several inter-layer units according to the overall height and a certain height interval.

[0026] In each interlayer unit, the steel structure components are segmented. The segmentation principle is that the vertical steel column is the main component, and the transverse steel beam and the oblique steel beam are the secondary components. Before construction, the bracket can be welded on the steel column of the main component to facilitate the docking and installation of the secondary components. Furthermore, the vertical steel column is set with segment nodes according to the set height, and the transverse steel beam is an integral component between two adjacent vertical steel columns. Then, the small-section steel column and the oblique steel beam are segmented according to the bracket node, and the segmentation principle is followed.

[0027] According to the above-mentioned cell structure and segmentation principle, the main and secondary component materials required for each cell are classified and piled separately to avoid confusion and facilitate the subsequent steel structure assembly work. Through this step, the reasonable division of the construction surface and the orderly segmentation of the components are achieved, providing a clear and orderly foundation for the subsequent curtain wall exterior decoration frame assembly work.

[0028] Step 2: The main steel structure foundation is welded and formed; As shown in Figures 4-7, the main steel structure in this embodiment includes H-shaped steel 1, main rectangular tube 11 and auxiliary rectangular tube 10, wherein the inner diameter of the main rectangular tube 11 is larger than the inner diameter of the auxiliary rectangular tube 10; the steel square tube 3 and the angle steel 2 are respectively welded to the main steel structure to form a panel layer based on the main steel structure, so that the main steel structure and the panel layer together constitute the main steel structure foundation. Therefore, during construction, the main steel structure foundation is mutually assembled and connected to form the keel support foundation of the main curtain wall external decoration frame, and the panel layer is used to be fixedly connected with the external decoration buckle cover. After the assembly of the aluminum alloy buckle cover of the keel support foundation is completed, the high-altitude special-shaped large-span curtain wall external decoration frame is formed.

[0029] Due to the different types of main steel structures in the invention, the panel layer structures installed thereon are also different, mainly including the following three different structures: (1) H-shaped steel structure foundation; Figure 4 As shown, the welding process of the H-shaped steel structure foundation is as follows: adopting a structurally symmetrical, node-symmetrical, and all-round symmetrical welding method, firstly, the short steel square tubes are uniformly welded to the inner side of the adjacent angle steels 2 along the extension direction of the angle steels 2, and the steel square tubes are correspondingly welded to the inner side of each short steel square tube, so that the bottom surface of the steel square tube 3 and the bottom surface of the angle steel 2 are on the same plane, forming a panel foundation, and then the panel foundation is correspondingly welded to the H-shaped steel 1, so that the H-shaped steel 1 structural foundation can be formed; (2) Main rectangular tube structure foundation; Figure 6 As shown, the welding process of the main rectangular tube 11 structure foundation is as follows: adopting a structurally symmetrical and all-round symmetrical welding method, directly weld 30*30*3mm steel pipes (hot-dip galvanized) symmetrically on the two long side surfaces of the main rectangular tube 11, and weld two groups on each side surface; weld 4mm thick steel workpieces (hot-dip galvanized) at the center of the two short side surfaces of the main rectangular tube 11, respectively, to form the structure foundation of the main rectangular tube 11; (3) Auxiliary rectangular tube structure foundation; such as Figure 7 As shown, the auxiliary rectangular tube structure (small-section steel column) does not need to be welded to the outside of the foundation panel layer, and can be directly fixed and connected to the outer aluminum alloy decorative buckle cover through self-drilling nails 6 with 5mm thick rubber pads 7 during construction.

[0030] Step 3: Construction of keel support foundation; The atrium area will be constructed first, followed by the outer facade steel structure, including: 1) Atrium area construction: like Figure 2 As shown, the steel frame facade structure of the atrium area is mainly composed of columns and steel beams, and H-shaped steel structure foundations are used as columns and steel beams. The beams and columns are welded and fixed, and the width gradually increases from bottom to top. The overall shape is trapezoidal. Therefore, when cutting materials, the beams can be divided into sections according to factors such as manufacturing process and transportation length restrictions. When the upper beam is longer, it can be divided into 3-4 sections. If the lower beam is relatively short, it can be adaptively divided into about 2 sections. The columns can be naturally disconnected according to the nodes with the beams.

[0031] During actual construction, firstly, the first layer of beams are connected in sections on the ground to ensure that the connection surfaces are tightly combined and that no debris enters the connection surfaces; then, starting from the bottom, two columns are first installed in the middle of the outer side of the main curtain wall structure of the building, and the embedded parts at the bottom of the columns are fixed to the ground. The verticality and top elevation of the columns are corrected, and after confirmation, the columns are pulled up with guy ropes to keep them stable; finally, beams are installed on the columns, and construction is carried out layer by layer from bottom to top in this way to the preset floors, so that the inner side of the topmost beam extends a longitudinal transverse support toward the direction of the curtain wall, and the transverse support is fixedly connected to the concrete structure on the top surface of the curtain wall to ensure the stability of the main steel structure of the atrium area.

[0032] 2) External facade steel structure construction, including: (1) Construction of supporting layer; The supporting layer structure is mainly composed of transverse steel beams, vertical steel columns and oblique steel beams, and in this embodiment, the main rectangular tube 11 structural foundation is used as the supporting layer body supporting structure. During construction, the vertical steel columns are first installed on the ground, then the transverse steel beams are installed on the vertical steel columns, and finally the oblique steel beams are installed between the transverse steel beams and the vertical steel columns. The specific construction process is: Install the first level of vertical steel columns at the bottom, fix the embedded parts at the bottom of the vertical steel columns to the ground from the inside to the outside, calibrate the verticality and top elevation of the vertical steel columns, and after confirmation, pull the guy ropes on the columns to keep them stable; Then use lifting equipment to install the first-layer horizontal steel beams between adjacent vertical steel columns, so that the two ends of the main rectangular tube structure foundation beams are fixedly connected to the corbels on the steel columns. Finally, install the oblique steel beams obliquely between the adjacent main rectangular tube structure foundations, with their bottoms fixed to the lower sides of the vertical steel columns and their tops obliquely extended upward to be fixedly connected to the corbels on the vertical steel columns. After the construction of the first layer is completed, it forms the supporting foundation of the outer facade steel structure.

[0033] (2) Construction in densely populated areas; In this embodiment, the dense area is arranged above the supporting layer, presenting an oblique grid structure, wherein the horizontal beams and oblique steel beams are both H-shaped steel structure foundations, and the columns include H-shaped steel structure foundations and auxiliary rectangular tube structure foundations. According to the design drawings, during construction, the columns are first installed on the supporting layer; then, the horizontal steel beams are installed on the columns; finally, the oblique steel beams are connected between the horizontal steel beams and the columns, and the oblique steel beams are arranged in the same direction in each interlayer unit. During the construction process, each layer of the structure is arranged from right to left in sequence as H-shaped steel structure foundation columns, oblique steel beams, auxiliary rectangular tube structure foundation columns, oblique steel beams, and H-shaped steel structure foundation columns. After all the steel components of each interlayer unit are installed, a spatial stiffness unit is formed.

[0034] That is, when constructing the columns, the H-shaped steel structure foundation and the auxiliary rectangular tube structure foundation are arranged alternately. This method aims to optimize the stability and lateral force resistance of the exterior decoration frame structure through the combination of large and small columns and the configuration of oblique steel beams. Specifically, the H-shaped steel structure foundation is used as a column to mainly bear the vertical load and provide support for the overall structure. The auxiliary rectangular tube structure foundation columns are used for auxiliary support to further share the load. The oblique steel beam structure is used to further enhance the lateral stability of the overall structure, prevent lateral deformation, and improve the overall strength and durability.

[0035] Step 4: Acceptance and spraying of paint; After the construction of the keel support foundation is completed, the steel structure keel is fully welded and inspected, and fire-retardant and anti-corrosion coatings are sprayed on the steel structure. The fire-retardant coatings can absorb, block and inhibit the spread of flames. After being applied to steel, they can significantly improve the steel's tolerance to high-temperature flames, thereby enhancing the building's fire resistance and heat insulation properties, making the overall structure more solid, enhancing the fire resistance of the steel structure, and reducing accidents such as steel structure failure and collapse caused by fire, thereby ensuring the safety of buildings and personnel.

[0036] Step 5: Install the outer decorative buckle cover; First, measure and lay out the aluminum alloy outer decorative buckle cover to determine the installation position, and then install the outer decorative buckle cover layer by layer from bottom to top, first vertically and then horizontally. Figure 4 As shown in Figure 5, the structure of the inner and outer decorative buckle covers in this embodiment includes a first decorative buckle cover 4, a second decorative buckle cover 5, a third decorative buckle cover 8 and a fourth decorative buckle cover 9. The first decorative buckle cover 4 and the second decorative buckle cover 5 are respectively installed on the outer sides of the H-shaped steel structure foundation and the main rectangular tube structure foundation. The first decorative buckle cover 4 and the second decorative buckle cover 5 are matched and snap-fitted together and fixed around the H-shaped steel 1 structure foundation and the main rectangular tube 11 structure foundation.

[0037] Specifically, in this embodiment, the middle part and both ends of the first decorative buckle cover 4 are respectively recessed inward to form a groove 41. The middle groove 41 is used to be welded and fixed to the steel square tube 3 on the H-shaped steel structure foundation or the main rectangular tube structure foundation. The grooves 41 at both ends are provided with clamps 42 for matching and snapping with the docking buckles 51 on the second decorative buckle cover 5 for installation.

[0038] Furthermore, both ends of the second decorative buckle cover 5 protrude outward to form a docking buckle 51, which can match and extend into the groove 41 of the first decorative buckle cover 4 and be clamped and fixed with the clamping head 42 in the groove 41, and when the first decorative buckle cover 4 and the second decorative buckle cover 5 are adapted to be buckled and clamped together, the surrounding surfaces of the keel support base are flush.

[0039] During construction, first weld and fix the first decorative buckle cover 4 to the steel square tube 3 on the front and rear side walls of the H-shaped steel structure foundation or the main rectangular tube structure foundation, and use self-tapping and self-drilling nails 6 with 5mm thick rubber pads 7 to fasten the grooves 41 at the left and right ends of the first decorative buckle cover 4 to the angle steel 2 on the H-shaped steel 1 structure foundation or the main rectangular tube 11 structure foundation, and finally fit the second decorative buckle cover 5 on the left and right sides respectively.

[0040] As shown in FIG7 , the third decorative buckle cover 8 and the fourth decorative buckle cover 9 are respectively installed on the outer side of the auxiliary rectangular tube structure foundation, and the clamping structure between the third decorative buckle cover 8 and the fourth decorative buckle cover 9 is the same as the clamping structure of the first decorative buckle cover 4 and the second decorative buckle cover 5. When installing the outer decorative buckle cover of the auxiliary rectangular tube structure foundation, it is only necessary to first fix the left and right ends of the third decorative buckle cover 8 to the auxiliary rectangular tube 10 through self-tapping and self-drilling nails 6 with 5mm thick rubber pads 7, and then fit the fourth decorative buckle cover 9 and the third decorative buckle cover 8 together.

[0041] This embodiment adopts a combination of buckle and welding to provide the necessary strength and stability of the structure while ensuring aesthetics. It not only provides a strong connection in the structure, ensuring that the decorative buckle cover can remain stable under various environmental conditions and is not easy to fall off or shift, but also through the precise positioning of the buckle, it can ensure that each decorative buckle cover is installed in the correct position, improving construction accuracy and efficiency. The buckle design simplifies the installation steps, reduces the need for complex tools, speeds up the construction, and also makes the joints between the decorative buckle covers tight and the surface smooth, improving the overall beauty of the building's appearance, making maintenance and replacement more convenient without requiring major changes to the entire structure.

[0042] Step 6: Main curtain wall structure connection construction; In this embodiment, at the intersection of each cross beam and column and the oblique steel beam in the outer facade construction area, a fastening structure connected to the main curtain wall structure is provided on the inner wall of the column, which is used to connect the outer decoration frame structure with the main curtain wall structure, thereby further improving the stability of the outer decoration frame structure.

[0043] As shown in Figures 8 and 9, the fastening structure in this embodiment includes a connecting steel plate 12, a connecting member 13, a stainless steel machine nail 14 and a bolt 18, wherein a mounting hole is reserved on the inner wall of the first decorative buckle cover 4 on the outer side of the H-shaped steel structure foundation, and the connecting steel plate 12 is welded and fixed to the inner wall of the H-shaped steel after passing through the mounting hole, and the outer side of the connecting steel plate 12 extends out of the outer side of the first decorative buckle cover 4, and the connecting member 13 is arranged between two adjacent connecting steel plates 12, and its inner end extends to the inner side of the main curtain wall glass 15, and the two sides of the end are symmetrically folded outward to form a flange structure, which is fixedly connected to the gasket frame 17 on the curtain wall body through the stainless steel machine nail 14, and the gap between the middle part of the connecting member 13 and the main curtain wall glass 15 is filled with sealant 16. The outer end of the connecting piece 13 extends outward to between the two connecting steel plates 12, and is fixedly connected to the connecting steel plates 12 on both sides thereof by bolts 18. During construction, the connecting steel plates 12 are first welded and fixed to the main steel structure, and after the installation of the exterior decorative aluminum alloy buckle cover is completed, the connecting piece 13 is fixedly connected to the connecting steel plates 12 to achieve a fastened connection between the main curtain wall structure and the exterior decorative frame structure, thereby effectively improving the safety and stability of the structural connection.

[0044] Step 7: Apply sealant to detect leakage; After completing the construction of all the exterior decorative buckles and fixing them to the curtain wall, check the gaps between the exterior decorative buckles from bottom to top and apply sealant to the gaps. Repeat the above steps in a counterclockwise construction manner to construct the exterior decorative frame system on the four sides of the building.

[0045] The method for constructing a high-altitude, special-shaped, and large-span curtain wall exterior decorative frame provided by the present invention adopts an assembled design, which effectively improves the construction quality and facilitates later maintenance. The present invention optimizes the entire process from design to construction and is suitable for high-altitude, special-shaped, and large-span curtain wall exterior decorative frame structures. It can effectively improve construction efficiency, ensure structural stability and safety, and meet the construction requirements of complex, special-shaped, and large-span structures, thus achieving a combination of aesthetics and functionality.

[0046] The embodiments of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for constructing a high-altitude special-shaped large-span curtain wall exterior decoration frame, characterized in that: The following steps are involved: Step 1: Divide the flow section; Divide the construction surfaces around the building to be constructed into two parts: the atrium area and the outer facade construction area outside the atrium, and the outer facade construction area is symmetrically arranged on the left and right sides of the atrium area facade; Step 2: The main steel structure foundation is welded and formed; The steel square tubes and angle steels are welded to the main steel structure respectively to form a panel layer based on the main steel structure, so that the main steel structure and the panel layer together constitute the foundation of the main steel structure; Step 3: Construction of keel support foundation; The atrium area is constructed first, and then the outer facade steel structure is constructed; the atrium area is composed of columns and steel beams, and the vertical columns are first installed on the ground, and then the horizontal steel beams are installed on the vertical columns, and the construction is carried out layer by layer from bottom to top; The outer facade steel structure area includes a support layer and a dense area; when constructing the support layer, vertical steel columns are first installed on the ground, then horizontal steel beams are installed on the vertical steel columns, and finally oblique steel beams are installed between the horizontal steel beams and the vertical steel columns; The dense area is arranged above the supporting layer. During construction, columns are installed on the supporting layer, then transverse steel beams are installed on the columns, and finally oblique steel beams are connected between the transverse steel beams and the columns, and the oblique steel beams are arranged in the same direction in each interlayer unit; Step 4: Acceptance and spraying of paint; After the keel support foundation construction is completed, the steel structure keel is fully welded and firmly inspected, and the steel structure is sprayed with fire-retardant and anti-corrosion coatings; Step 5: Install the outer decorative buckle cover; Measure and lay out to determine the installation position of the aluminum alloy exterior decorative buckle cover, and then install the exterior decorative buckle cover on the outside of the keel support foundation layer by layer, first vertically and then horizontally, from bottom to top; Step 6: Main curtain wall structure connection construction; At the intersection of each cross beam and column and oblique steel beam in the outer facade construction area, the fastening structure arranged on the inner wall of the column is used to fix it with the main curtain wall structure; Step 7: Apply sealant to detect leakage; Check the gaps between each exterior decorative buckle cover from bottom to top, and apply sealant to the gaps; finally, repeat the above steps in a counterclockwise construction manner to construct the exterior decorative frame system on the four sides of the building.

2. The method for constructing a high-altitude special-shaped large-span curtain wall exterior decoration frame according to claim 1 is characterized in that: In step 2, the main steel structure includes H-shaped steel, main rectangular tube and auxiliary rectangular tube, the inner diameter of the main rectangular tube is larger than the inner diameter of the auxiliary rectangular tube, and the main steel structure foundation includes H-shaped steel structure foundation, main rectangular tube structure foundation and auxiliary rectangular tube structure foundation.

3. The method for constructing a high altitude special-shaped large span curtain wall exterior decoration frame according to claim 2 is characterized in that: The H-shaped steel structure foundation welding construction includes: uniformly welding the steel square tubes to the inner sides of adjacent angle steels along the extension direction of the angle steels, and correspondingly welding the steel square tubes to the inner sides of each steel square tube so that the bottom surfaces of the steel square tubes and the bottom surfaces of the angle steels are on the same plane to form a panel foundation, and then the panel foundation is correspondingly welded to the H-shaped steel to form an H-shaped steel structure foundation; the main rectangular tube structure foundation welds the steel square tubes to the four sides of the main rectangular tube respectively, with two groups welded on each side.

4. The method for constructing a high-altitude special-shaped large-span curtain wall exterior decoration frame according to claim 1 is characterized in that: The steel frame facade structure of the atrium area includes columns and steel beams, and an H-shaped steel structure foundation is used as the columns and steel beams. The beams and columns are welded and fixed, and the width gradually increases from bottom to top, and the overall shape is a trapezoid.

5. The method for constructing a high-altitude special-shaped large-span curtain wall exterior decoration frame according to claim 1 is characterized in that: The support layer construction process includes installing the first level of vertical steel columns at the bottom, fixing the embedded parts at the bottom of the vertical steel columns to the ground from the inside to the outside, correcting the verticality and top elevation of the vertical steel columns, and after confirmation, pulling the cables on the columns to keep them stable; Then, use the hoisting equipment to install the first-layer transverse steel beams between the adjacent vertical steel columns, so that the two ends of the main rectangular tube structure foundation beams are fixedly connected to the brackets on the steel columns, and finally, the oblique steel beams are obliquely installed between the adjacent main rectangular tube structure foundations, and the bottom of the oblique steel beams is fixed to the lower side of the vertical steel column, and the top is obliquely extended upward to be fixedly connected to the brackets on the vertical steel columns; After the first floor is fully constructed, it will form the supporting foundation of the outer facade steel structure.

6. The method for constructing a high-altitude special-shaped large-span curtain wall exterior decoration frame according to claim 1 is characterized in that: The collection area is arranged above the supporting layer. During the construction process, each layer of the structure is arranged from right to left in sequence as H-shaped steel structure foundation columns, oblique steel beams, auxiliary rectangular tube structure foundation columns, oblique steel beams, and H-shaped steel structure foundation columns. After all the steel components of each interlayer unit are installed, a spatial stiffness unit is formed.

7. The method for constructing a high-altitude special-shaped large-span curtain wall exterior decoration frame according to claim 1 is characterized in that: The structure of the outer decorative buckle cover includes a first decorative buckle cover, a second decorative buckle cover, a third decorative buckle cover and a fourth decorative buckle cover. The middle part and both ends of the first decorative buckle cover are respectively recessed inward to form grooves, and the grooves at both ends are provided with clamping heads. Both ends of the second decorative buckle cover protrude outward to form docking buckles, which can match and extend into the groove of the first decorative buckle cover and be clamped and fixed with the clamping heads in the groove. When the first decorative buckle cover and the second decorative buckle cover are adapted to be buckled and clamped together, the surrounding surfaces of the keel support base are flush.

8. The method for constructing a high altitude special-shaped large-span curtain wall exterior decoration frame according to claim 7 is characterized in that: The clamping structure between the third decorative buckle cover and the fourth decorative buckle cover is the same as the clamping structure of the first decorative buckle cover and the second decorative buckle cover. When installing the outer decorative buckle cover on the auxiliary rectangular tube structure foundation, you only need to fix the left and right ends of the third decorative buckle cover to the auxiliary rectangular tube through self-tapping and self-drilling nails with rubber pads, and then fit the fourth decorative buckle cover and the third decorative buckle cover together.

9. The method for constructing a high altitude special-shaped large-span curtain wall exterior decoration frame according to claim 1 is characterized in that: A fastening structure connected to the main curtain wall structure is arranged on the inner wall of the column, and is used to connect the outer decorative frame structure with the main curtain wall structure. The fastening structure includes a connecting steel plate, a connecting piece, stainless steel machine nails and bolts. The inner end of the connecting steel plate is welded and fixed to the inner wall of the H-shaped steel. The connecting piece is arranged between two adjacent connecting steel plates, and its inner end extends to the inner side of the main curtain wall glass. Both sides of the end are symmetrically folded outward to form a flange structure. The flange structure is fixedly connected to the gasket frame on the curtain wall body through stainless steel machine nails. The outer end of the connecting piece extends outward between the two connecting steel plates and is fixedly connected to the connecting steel plates on both sides thereof through bolts.

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